摘要
综合电火花加工快速蚀除材料与电解加工溶解重铸层的优势,提出了在低电导率的NaNO3溶液中使用电极逐层往复式铣削加工微小方孔的电火花-电解复合加工方法,并研究了电解液浓度、电压和电容参数对微小方孔加工质量的影响。结果表明:电解液浓度与加工电压对微小方孔加工质量影响较大,电容影响相对较小。选用最优加工参数在100μm厚的321不锈钢片上加工微小方孔,得到的方孔加工质量好、侧壁表面无重铸层,且工具电极相对损耗仅0.05%。
The advantages of rapid material removal of EDM and dissolving the recast layer of ECM were integrated,an EDM-ECM combined machining method is proposed for machining micro square holes by reciprocating milling layer by layer in low-conductivity NaNO3 solution,and the influence of electrolyte concentration,voltage and capacitance on the machining quality of tiny square holes were studied.The results showed that the electrolyte concentration and the processing voltage get a greater impact on the processing quality of micro square holes,while the capacitance has a relatively smaller impact.The optimal processing parameters were used to process tiny square holes on a 100μm thick 321 stainless steel sheet,the holes get good machining quality without recast layer on the sidewall surface,while the tool electrode relative wear ratio is only 0.05%.
作者
吉帅
曾永彬
JI Shuai;ZENG Yongbin(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《电加工与模具》
2021年第1期33-37,共5页
Electromachining & Mould
基金
国家自然科学基金资助项目(91960204)
江苏省自然科学基金资助项目(BK20192007)。
